Razor-sharpening machine.



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* Patented Sept. 22, 1914.

L. J. ODELL.

RAZOR SHARPENING MACHINE. APPLICATION P'ILED Ines, 1913.

V 1; I zvl a dall,

L. J. ODELL.

RAZOR SHARPENING MACHINE.

APPLICATION FILED FEB. 3, 1913.

1 1 1 1,31 Patented Sept. 22, 1914.

2 SHEETSSHEET 2.

,Ildllllll'ill UNITED STATES PATENT OFFICE.

LEVI J. ODELL, DE LOS ANGELES, CALIFORNIA.

nszon-snnnrnnme MACHINE.

Specification of Letters Patent.

Application filed February 3, 191.8. Serial No. 745,764.

To all whom. it may concern Be it known that. I, LEVI J. OonLL, acitizen of the United States, residing at Los Angelesthe county of LosAngeles and State of California, have invented, new andnscful.Improvements in Razor-Sharpening Machines, of which the following is aspecification.

, This invention relates to improvements in and to alternateiy bring theblades in contact with a pair of revolving stropping rolls, andreciprocate the blades in relation to the abrading periphery of therolls.

It is a further object. to provide a frame.

for the battery of blade holders which is oscillated and reoiprocatedautomatically by means of the same cam.

In the drawings Figure 1 is a lan view of the machine, a portion of oneo the rolls being broken away, bar of the frame, to clearly shown theposition of the blade holders in relation to the rolls. Fig. '2 is afront elevation of the maconnecting rod. Fig. 3 is chine, a portionvofthe cam drive shaft being broken a'way to clearly show the adjustable anend view ofthe upper part of the table, together with the abradingroller and the blade holder carrying frame, a portion of the d rivepulley on this endbeing broken away to clearly show i the pivotal meansfor the blade carrying frame, Fig. 1 is a section on the line 44 of Fig.2, viewed in th'e'direction indicated by the arrows.

In the drawings, the component parts are indicated by numerals, 6 beingthe top of the'table, supported by means of legs 7, the drivingmechanism being located preferably below the table and no-tshown in thedrawings. The frame work sup. orted on th table being preferablycastf-med b side and top pieces, the sides or ends 8 and S) consistingof L shaped'pieces provided. with a horizontal portion which-rests uponthe top of the table and is secured to lugs 10, prefer ably formedintegrally with the table top, by means of suitable fastenings, as thescrews 11. the two lugs being placed at a proper distance to accommodatethecnd pieces WlllCl] are provided with a plurality together with thetop of bearings. Two of these bearings 12 and j 14: in end piece 8 areplaced vertically one iabove the other in the vertical limb of thepiece, the other bearing 15 being located in an extension of thehorizontal portion and slightly below the horizontal plane of thebearing 14. The opposite end piece 9 is provided with bearings in .aline with these latter and designated 16, 17 and 18 respectively. A topbar 20 joins the tops of the end pieces toform a complete frame for theI abrading rolls, the top piece 20 being preferably of such width as toprovide a certain arr-lipunt of protection or shield to the upperMounted in the bearings 12 and 16 a shaft 21 on which is securelymounted the .roll 22, provided with an abrading surface '23 of suitablematerial, usually and preferably of leather, the end of the shaft adjo--cent bearing 16 having secured thereon thepulley 24. 4 z Revolublymounted in the bearings 14 and 17 is the shaft 25, on which is secured-the roll 26 with a suitable abrading surface 27, this shaft beingextended beyond the bearing 14 and has secured thereon the pulley wheel28. Suitable belts, not shown, are connected to these pulleys from amain drive shaft below the table, to drive them in the directionindicated by the arrows in Figs. 3 and 41, an interval being interposedbetween the adjacent portions of the abrading peripheries to provide forthe contact of the blades therewith.

Mounted in the bearings 15 and 18 and adapted to rotate therein, is theshaft 30, the end of this shaft being preferably carried beyond thebearing 18 and provided with a pulleyuwheel 31, a suitable belt beingconnected with this pulley to drive the shaft in a direction opposite tothat of the lower abrading roll, as illustrated by the arrow, and at theproper speed from the main drive shaft below the table top.

On the shaft 30 and 18 is mounted the rain wheel which consists,preferably of a cylindrical sleeve provided with the cam flanges 34;,which extend outwardly and are so formed as to complete a continuousworm channel, with'two flattened portions, in which a plurality of camrollers engage and are positively operated, "there being just sutlicientplay to permit of Extending from the end pieces 1 nwurdly or adjacentthe bearing toward the bearings of the cam-shaft, are the lugs 85 and36, formed similarly on each end shown, being formed 'piece and in thesame plane, a vertical bore being carried through theseextensions inwhich is secured the shaft'37.

v Embracing the shaft and being pivotally mounted thereon, are thebrackets 38, the ends of the brackets engaging withthe shaft beingpreferably a yoke having the bearing extensions which engage-with theinnerfaces of the extensions 35 and 36 so as to provide support thereforand are pivotally mounted on this shaft.- These brackets are of withcient length to extend over and ,above the vertical plane of the camshaftand are'provided with bearings 39 in this plane, which arepivotally mounted by means of the trunnions40 in bearings 41 formed ontheoppositely disposed upper and lower sides of the ring 42 formed inthis front end of the bracket. Mounted in the bearings 39 are thetrunnion's 43 formed on the oppositely disposed ends of the castingb M,forming the support vertical sides 48,;which are notched to receive thetrunnions of the blade holders which, as shown are of similarconstruction to those disclosed in my United States Patent No.1,051,817, for razor sharpening machines, dated January 28, 1913. Thesupporting frames, however, shown, are provided with the guide bars 49placed on either side of the front of said brackets, so that the shank50 of the blade holder is' positively guided in a-vertical direction andthe trunnions 51 are relieved of considerable strain incident to thereciprocation of the blade holder frame and the blade in relation to theabrading rolls.

The studs 46 previously referred to, act as sockets, within which aresecured the threaded ends of the screw clamp '52, by which the yoke endsof the spring or resilient blades 53, secured to the shank of theblade-holder 50, are locked to hold the blade holder in operativeposition on the frame.

On the lower face of the blade holder frame is formed the stud 54 whichis provided with the stub shaft on which is mounted the roller 55, thisroller being so disposed that it engages in the worm channel formed bythe flanges 34, the movement being such that a complete revolution ofthe as short channels with cam worm reciprocates the blade holder andthe blades in aplane, parallel to the plane carried through the axes ofthe abrading rolls a distance slightly greater than the space betweenadjacent blade jaws, and the blade held therebetween so that the en:tire periphery of the abrading'roll is en-. gaged by the blade and thewearing of channels in the surfaces is eliminated.

'To provide the oscillating movement, two

lugs 56 and '57 are formed also on the lower face of the blade holderframe, and provided with a bore therethroughparallel with I the upperface forming the floor in which is pivotally vided with a trunnion 60,-this trunnion'b e ing engaged by the arms 61 of the yoke 62.

mounted a shaft 58 formed asan extension of the shank 59, which-55pm Thelower end of the yoke is provided J r with a threaded bore in which isinserted the upper portion 63 of the reversely threaded screw 64, the"lower end of this screw bein'g carried through -a threaded bore in thethe yoke 66 by-means of the trunnion 67. 'Thearms of the yoke66fembraceand are ,pivotedbymeans of the-pin 68 to a lower 1 arm 69 of the bellcrank lever,- which is provided with a vertically disposed arm 70, theupper end of the arm being provided with a short shaft'with its axis inthe same plane as the horizontal axial plane of the cam shaft on whichis mounted the roller 71, which roller is preferably; of the samediameter as the roller 55 andlengages inthe worm channel formed bythe-cam flanges 34, a revolution of the worm reciprocating the arm 70of'the bell crank, which movement is transmitted through the adjustableconnections described and oscillates the vblade holder frame to pressthe bladegalternately against the upper and the lowen abradin rolls.-

The operation of the device Wlll be readily understood by" the abovedescription, suitable motive power being applied by belts, as previouslydescribed, to the various pulleys thereby revolving the shafts in. thedirections indicated. The rotation of the shaft 30 and the cam 32operates to cause the latter to act to e'fiect alternate verticalrocking and longitudinal reciprocal'movement of the blade-carryingframe; the frame be- ,extensibn'r'65, which is pivotally mounted in jing first rocked vertically to move the blade or blades carried therebyinto contact with one-of the rolls 22 or 26. The moment the bladecontacts the roll the frame will be given a longitudinal reciprocalmovement V by the cam 22 to move the blade substantially parallel withthe surfaceof the abrading roll a distance approximating the width ofthe space between adjacent blades so that the wear of the abradingsurfaceswill be equalized throughout said surfaces by the movement ofthe blades over the entire periphery of the rolls, thus preventing thefor- I oate longitudinally substantially parallel fiii-ation of channelsthereon and insuring an even grindingof the blades.

What-I claim is:

a pair of spaced stropping rolls, a frame mounted to rock vertically andto reciprowith said rolls, means for supporting a plurality of blades onsaid frame, a cam, and separately operated means whereby the rotation ofsaid cam will operate alternate rocking and reciprocatingfm'ovev ment ofsaid frame. A;

2. In a razor stropping machine a cylindrical stropping rolls, a frameextending parallel with said rolls, and pivoted to rock vertically, aswinging support for the pivotal bearings of said frame by which saidframe can be shifted longitudinally, a plurality of blade-carriers onsaid frame adapted to position a seriesgii' blades intermediate saidrolls, acam shaft, a single grooved cam on said shaft, and separately Iactuated means whereby the rotation of said cam will operate to effectalternate rocking and reciprocating movement 0t said frame in bothdirections.-

3. Ina razor stropping machine a pair ofrol-ls, a blade carryingcylindrical stropping frame extending parallel with said rolls, a pairof horizontally swinging arms adjacent the ends of said rolls on whichsaid reciprocate longitudinally.

frame is pivotally mounted to melt vertically, a cam shaft, a single camon said shaft, and separately actuated means en T 1." In a razor bladesharpening machine,

gagedby-s aid cam, whereby the frame'will. be caused to alternately rockvertically an ln a'razor stropping machine the combinatidii with a pairof spaced cylindrical stropping rolls, a frame'carrying a plurality ofblade holders adapted to'positionthe blades intermediate said stroppingrolls, trunnions on the ends of said frame, bear ings 'in which saidtrunnions are turnably mounted, a pair of arms pivoted to swinghorizontally on which said bearings are piv oted, a single peripherallygrooved cam, and connections whereby the rotation of said cam willoperate to rock said frame vertically to move the blades into alternatecontact withsaid rolls, and whereby the frame will be movedlongitudinally -on. said arms to reciprocate the blades in bothdirections when in contact with said rolls and longitudinally thereof. 2v

- In witness that I claim the foregoing I have hereunto subscribed myname this 24th day of. January, 1918.

LEVI J. onnLL.

